PROBLEM TO BE SOLVED: To provide a corrugated sheet constituted by joining a flat sheet and corrugated sheet both of which are composed of an adsorbing sheet obtained by forming an adsorbing layer containing an inorganic adsorbing material on the surface of a base material sheet, using no nonwoven fabric or fiber material in the base material, easy to control adsorbing capacity and excellent in the joining strength of the flat sheet and the corrugated sheet.SOLUTION: The corrugated sheet 1 is constituted by joining a corrugated panel 3 and a flat panel 2, each of which comprises an adsorbing sheet obtained by laminating an adsorbing layer containing an inorganic adsorbent and a binder on the surface of a substantially air impermeable base material sheet comprising thermoplastic resin, by the mutual thermal welding of the base material sheets in the respective adsorbing sheets.COPYRIGHT: (C)2012,JPO&INPIT【課題】基材シートの表面に無機吸着材を含む吸着層を形成してなる吸着シートの平板と波板を接合してなるコルゲートシートであって、基材に不織布や繊維材料を用いず、吸着性能の制御が容易で、かつ平板と波板との接合強度に優れたコルゲートシートを提供する。【解決手段】熱可塑性樹脂からなる実質的に透気のない基材シート表面に、無機吸着材とバインダーとを含む吸着層を積層した吸着シートからなる波板3と平板2を、それぞれの吸着シート中の基材シート同士の熱融着により接合してなるコルゲートシート1。【選択図】図1
